PLEASE HELP FAST ILL MARK AS BRAINLIEST
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The final result is: (7x + 2)(3x<span>² - 4).</span>
There is only one change of sign, so there is only one possible positive root.
There are five changes of signs, so there are 5,3 or 1 possible negative roots.
The number of complex roots can be equal to 4,2 or 0 (degree of a polynomial - possible positive roots - possible negative roots)